Hot-water boiler.



I v PATE NTED MAY 24, 1904. G. GAEBLER HOT WATER BOILER. APPLICATION mm m. 27. 1904.

N0 MODEL.

slu-venfoz STATES PATENT OFFICE,

Patented May24, 1904.

' I CHARLES GAEBLER, or POUGHKEEPSIE, NEW YORK.

HOT-WATER BOILER.

, srnc xrrqarrou forming part of Letters Patent No. 760,734, dated May 24, 1904.

i I Application filed February 27, 1904. Serial No. 195,654:- (No model.)

To all? Lola/obi it may eon/corn:

Be it known that 1, CHARLES GAEBLER, a citizen of the United States, residing at Poughkeepsie, in the county'of Dutchess and State of New ,York, have invented certain new and use: ful Improvements in Hot- VVater Boilers, of which the followingis a specification.

My invention relates to improvements in hot-water boilers, and has for its purpose theconstruction of a boilerin such a manner as to obtain a minimum'of space in the installment thereof, together withthe greatest heating' efiects upon thewater to be circulated fro'mthe boiler toabuilding or bynieans of a system of pipes or by any other well-known method of building-heating.

- The special objects of this present invention are to so arrange the fire-box as to produce the greatest heat area upon the water-pipes,

to provide ameans for conducting ofi' gases from a fire-box without in any way interfering with the extentof the space for the water-pipes or boiler portion,'and to arrange I the flow-pipes in the best manner possible for establishment of a flow from and return to the boiler. These objects are'obtained by a specific structure and arrangement of parts the boiler C and the fire-box D. This fire boX D is located at the lower end of the cavity B of the furnace-body A and comprises the vertical walls d and the grate d. Below this grate is an ash-pit E. Surrounding the vertical walls of thefire-boxis a water-leg F,

which is formed integral with the walls d of the fire-boxand has in communication with the lower portion thereof a pair of returnpipes G, these pipes extending through the walls of the furnace body and serving the usualpurpose of return-pipes. Arranged within the fire-box, which is in open communicationwith the cavity B of the furnacebody', there is disposed the heating-boiler C.

Thisboiler comprises a water-leg'H, arranged at its lowermost portion, which has a series of short pipes it, being four in number-in this structure, which connect this boiler-leg H with the upper portion of. the water-leg F surrounding the fire-box, whereby a communication is formed betweenthe said water leg' F and the water-leg Hof the'boiler. The furnace-opening b is enlarged aroundthjs portion of the boiler, so that gases may flow en- I tirely around as well as upwardly'ithrough the leg H, whichis formed witha c'entral opening through jthe same. This {arrangement gives a largeheating area within a portion-of 5 the .boiler and to the pipestheredf. Arranged in a double line around this water-leg H there are aseries of water-pipes L whi''h arein communication with the water-leg at their lower extremity and, which project vertically up 79 ward toward the upper end of the furnacecavity. At their upper extremity they are in communication with the second and main water-leg J, which is composed of walls forming the chamber, extending entirely around the boiler, between which walls and central thereof there is an opening which is disposed vertically above the central opening of the lower water-leg. The furnace-opening B is contracted between these water-legs H and J, 80 so as to come into contact with the pipes I, as seen at 6, while just above this projection B the furnace-openihg-again enlarges, leaving a space around the water-leg J of a substantial oven shape, wherein is gathered the products 5 of combustion from the fire-box, these being led off through a smokediue K. Leading off from the water-leg J are flow-pipes L, from which thewater or steam is conducted throughout a building and on the return of the water 9 by means of a system of pipes (not shown, but readily understood in their use) is led to the return-pipes G, above mentioned. Upon the flow-pipes L are secured auxiliary flow' pipes M, which lead vertically upwardly to another system 'ofpipes for the purpose of circulating the heating medium.

Upon reference to Fig. 2 it. is seen that the upper portion of the water-leg J is provided with flanges J, which are formed on the forthat this furnace has been so constructed as to economize space, to require a simple number of parts, and at the same time to secure the full benefit of the combustion in the fireboX. It is these advantageous results due to the specific structure of the present invention which I wish to protect myself upon. Many slight changes and variations may be introduced; but I believe that I am entitled to cover the same in this application, as mere changes in detail of structure are fully contemplated and believed to lie within'the scope of the present invention;

What] claim, therefore, and desire to secure by Letters Patent of the United States, 1s

1. In a heating apparatus of the type set forth, the combination with a furnace-body having enlarged upper and lower chambers and a contracted portion within the same, a fire-box disposed at the lower portion of the lower chamber having a water-leg surrounding the same, return-pipes communicating with the lower portion of the waterleg, a boiler arranged within the upper and lower chamber, said boiler comprising an upper and lower water-leg having central openings therein forming a smoke-flue, a series of waterpipes connecting the lower water-leg of the boiler with the water-leg surrounding the firebox, and flow-pipes leading off from the upper water-leg, substantially as described.

2. In a water-heating apparatus, the combination with a furnace having a cavity therein being enlarged at the top and bottom portions and contracted centrally, of a boiler comprising a fire-box located at the bottom portion of the furnace-cavity, a water-leg surrounding and integral with the fire-box having return-pipes in communication therewith, vertically-disposed pipes leading from the upper end of the water-leg, a lower water-leg forming a portion of the boiler having communication with said pipes, a series of pipes arranged in a double row upon the water-leg of the boiler, said pipes lying within the contracted portion of the furnace-cavity, an upper water-leg disposed at the upper portion of said series of pipes lying within the upper and enlarged chamber of the furnace-cavity, flanges formed integral therewith extending outwardly from 'the forward and rear face thereof adapted to engage in the furnacebody for supporting the boiler, flow-pipes communicating with the upper waterleg of the boiler, and a smoke-flue adapted to carry products of combustion, said products circulating centrally upwardly through the boiler and adapted to flow around the pipes of the boiler, substantially as set forth.

In testimony whereof I have signed my name to this specification in presence of two witnesses.

CHARLES GAEBLER. Witnesses:

J AMES E. CARROLL, CHARLES L. MCOANN. 

